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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <[email protected]>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Serializer\Normalizer;
use Symfony\Component\Serializer\Annotation\Ignore;
/**
* Converts between objects with getter and setter methods and arrays.
*
* The normalization process looks at all public methods and calls the ones
* which have a name starting with get and take no parameters. The result is a
* map from property names (method name stripped of the get prefix and converted
* to lower case) to property values. Property values are normalized through the
* serializer.
*
* The denormalization first looks at the constructor of the given class to see
* if any of the parameters have the same name as one of the properties. The
* constructor is then called with all parameters or an exception is thrown if
* any required parameters were not present as properties. Then the denormalizer
* walks through the given map of property names to property values to see if a
* setter method exists for any of the properties. If a setter exists it is
* called with the property value. No automatic denormalization of the value
* takes place.
*
* @author Nils Adermann <[email protected]>
* @author Kévin Dunglas <[email protected]>
*/
class GetSetMethodNormalizer extends AbstractObjectNormalizer
{
private static $reflectionCache = [];
private static $setterAccessibleCache = [];
/**
* {@inheritdoc}
*/
public function supportsNormalization($data, ?string $format = null)
{
return parent::supportsNormalization($data, $format) && $this->supports(\get_class($data), true);
}
/**
* {@inheritdoc}
*/
public function supportsDenormalization($data, string $type, ?string $format = null)
{
return parent::supportsDenormalization($data, $type, $format) && $this->supports($type, false);
}
/**
* {@inheritdoc}
*/
public function hasCacheableSupportsMethod(): bool
{
return __CLASS__ === static::class;
}
/**
* Checks if the given class has any getter or setter method.
*/
private function supports(string $class, bool $readAttributes): bool
{
if (null !== $this->classDiscriminatorResolver && $this->classDiscriminatorResolver->getMappingForClass($class)) {
return true;
}
if (!isset(self::$reflectionCache[$class])) {
self::$reflectionCache[$class] = new \ReflectionClass($class);
}
$reflection = self::$reflectionCache[$class];
foreach ($reflection->getMethods(\ReflectionMethod::IS_PUBLIC) as $reflectionMethod) {
if ($readAttributes ? $this->isGetMethod($reflectionMethod) : $this->isSetMethod($reflectionMethod)) {
return true;
}
}
return false;
}
/**
* Checks if a method's name matches /^(get|is|has).+$/ and can be called non-statically without parameters.
*/
private function isGetMethod(\ReflectionMethod $method): bool
{
return !$method->isStatic()
&& (\PHP_VERSION_ID < 80000 || !$method->getAttributes(Ignore::class))
&& !$method->getNumberOfRequiredParameters()
&& ((2 < ($methodLength = \strlen($method->name)) && str_starts_with($method->name, 'is'))
|| (3 < $methodLength && (str_starts_with($method->name, 'has') || str_starts_with($method->name, 'get')))
);
}
/**
* Checks if a method's name matches /^set.+$/ and can be called non-statically with one parameter.
*/
private function isSetMethod(\ReflectionMethod $method): bool
{
return !$method->isStatic()
&& (\PHP_VERSION_ID < 80000 || !$method->getAttributes(Ignore::class))
&& 0 < $method->getNumberOfParameters()
&& str_starts_with($method->name, 'set');
}
/**
* {@inheritdoc}
*/
protected function extractAttributes(object $object, ?string $format = null, array $context = [])
{
$reflectionObject = new \ReflectionObject($object);
$reflectionMethods = $reflectionObject->getMethods(\ReflectionMethod::IS_PUBLIC);
$attributes = [];
foreach ($reflectionMethods as $method) {
if (!$this->isGetMethod($method)) {
continue;
}
$attributeName = lcfirst(substr($method->name, str_starts_with($method->name, 'is') ? 2 : 3));
if ($this->isAllowedAttribute($object, $attributeName, $format, $context)) {
$attributes[] = $attributeName;
}
}
return $attributes;
}
/**
* {@inheritdoc}
*/
protected function getAttributeValue(object $object, string $attribute, ?string $format = null, array $context = [])
{
$getter = 'get'.$attribute;
if (method_exists($object, $getter) && \is_callable([$object, $getter])) {
return $object->$getter();
}
$isser = 'is'.$attribute;
if (method_exists($object, $isser) && \is_callable([$object, $isser])) {
return $object->$isser();
}
$haser = 'has'.$attribute;
if (method_exists($object, $haser) && \is_callable([$object, $haser])) {
return $object->$haser();
}
return null;
}
/**
* {@inheritdoc}
*/
protected function setAttributeValue(object $object, string $attribute, $value, ?string $format = null, array $context = [])
{
$setter = 'set'.$attribute;
$key = \get_class($object).':'.$setter;
if (!isset(self::$setterAccessibleCache[$key])) {
self::$setterAccessibleCache[$key] = method_exists($object, $setter) && \is_callable([$object, $setter]) && !(new \ReflectionMethod($object, $setter))->isStatic();
}
if (self::$setterAccessibleCache[$key]) {
$object->$setter($value);
}
}
protected function isAllowedAttribute($classOrObject, string $attribute, ?string $format = null, array $context = [])
{
if (!parent::isAllowedAttribute($classOrObject, $attribute, $format, $context)) {
return false;
}
$class = \is_object($classOrObject) ? \get_class($classOrObject) : $classOrObject;
if (!isset(self::$reflectionCache[$class])) {
self::$reflectionCache[$class] = new \ReflectionClass($class);
}
$reflection = self::$reflectionCache[$class];
if ($context['_read_attributes'] ?? true) {
foreach (['get', 'is', 'has'] as $getterPrefix) {
$getter = $getterPrefix.$attribute;
$reflectionMethod = $reflection->hasMethod($getter) ? $reflection->getMethod($getter) : null;
if ($reflectionMethod && $this->isGetMethod($reflectionMethod)) {
return true;
}
}
return false;
}
$setter = 'set'.$attribute;
if ($reflection->hasMethod($setter) && $this->isSetMethod($reflection->getMethod($setter))) {
return true;
}
$constructor = $reflection->getConstructor();
if ($constructor && $constructor->isPublic()) {
foreach ($constructor->getParameters() as $parameter) {
if ($parameter->getName() === $attribute) {
return true;
}
}
}
return false;
}
}